%%
%% The LaTeX Companion, 3ed
%%
%% Example 9-6-13 on page I-719 in "Vertical positioning features".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{135.0pt}

  %!TEX program = lualatex

  \setlength\parindent{0pt}

%StartShownPreambleCommands
\usepackage{fontspec}  \setmainfont{Alegreya}
\newcommand\test[1]
    {X{\addfontfeature{VerticalPosition=#1}1234 strd}
    \hfill (\texttt{\footnotesize#1})\par}
%StopShownPreambleCommands

\begin{document}
\test{Superior}  \test{Ordinal} \test{Inferior}
\test{ScientificInferior}       \test{ResetAll}
\end{document}
